Attwood Marine Flush Mount Fuel Vent, SS316, 5/8 in Hose, 7/8 in Max Hull, 1-3/8 in Hole
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Overview
The Attwood Marine Alloy Flush Mount Fuel Vent is a 316 stainless steel fuel tank vent for boats that need a clean hull finish without a protruding exterior cap. It fits 5/8 inch inner diameter vent hose, installs through a 1-3/8 inch hole, and is suitable for hull thicknesses up to 7/8 inch.
This vent is built for marine fuel venting applications where the outside fitting should sit close to the hull and stay less exposed to bumps, dock contact, and routine washdowns. The cap can be removed with a hex head wrench, giving access for filter cleaning and fuel system pressure testing without replacing the whole fitting.
Key features
- 316 stainless steel alloy construction helps resist corrosion in saltwater and freshwater environments.
- Flush exterior profile reduces the chance of damage from hull scrapes, dock contact, or gear brushing against the fitting.
- Accepts standard 5/8 inch inner diameter marine fuel vent hose.
- Fits hulls up to 7/8 inch thick with a 1-3/8 inch installation hole.
- Removable cap allows filter cleaning and fuel system pressure testing with a hex head wrench.
- Supplied with two silicone gaskets to support a sealed installation at the hull.
Variants
This fuel vent is offered in two configurations for different hose routing needs.
The vent body, 316 stainless steel alloy construction, 5/8 inch hose fit, 7/8 inch maximum hull thickness, and 1-3/8 inch installation hole are consistent across the listed versions. The difference is the vent outlet style.
- 66031-3: Straight vent. This version works for installations where the vent hose can run directly from the fitting without needing an immediate change in direction.
- 66032-3: 90 vent. This version helps when space behind the hull is tighter or the hose needs to turn soon after the fitting.
Installation and fit
Before drilling, confirm the mounting location has enough backing space for the selected straight or 90 degree hose path. The fitting is intended for a 1-3/8 inch hull opening and should be paired with 5/8 inch inner diameter fuel vent hose.
The flush face makes it a good match for hull sides, cockpit-adjacent areas, and exterior locations where a cleaner profile is preferred. As with any fuel system component, the vent should be installed so the hose runs without kinks, low traps, or sharp bends that could restrict tank breathing.
Maintenance and care
The removable cap gives practical access for cleaning the filter and pressure testing the fuel system. Periodic inspection is useful on boats that see salt spray, fuel splash, heavy washdowns, or long storage periods, especially around the gasket area and hose connection.
What’s included
- Flush mount fuel vent
- Two silicone gaskets
Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.
Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.
Delivery and tracking
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Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.
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Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.
To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.
We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.
